Car-coupling.



Patented May 4, 1915.

2 SHEETS-SHEET I.

M n I a L F u 9: L 1,1 m n r L Patented May 4, 1915.

SHEET 2.

HARRY E. DOERR, OF ST. LOUIS, MISSOURI, ASSIGNOR TO SAMSON CAB COUPLER COMPANY, OF NEW YORK, N. .Y., CORPORATION OF NEW YORK..

GAB-OOUPLING.

v Specification of Letters Patent.

Application filed February 5, 191.4. Serial No. 816,801.

To all whom it may concern:

Be it known that I, HARRY E. DOERR, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Car-Couplers, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to car couplers, and particularly to couplers of the type shown in United States Patent No. 902,616, dated November 3, 1908, in which the knuckle is provided with, a pair of wings that embrace the drawhead and which enter notches in the locking pin when the coupler is in uncoupled position.

.The main object of my invention is to.

provide a car coupler of the type mentioned which comprises an eiiicient means of simple construction forpreventing the locking pin from being withdrawn completely from the head during the operation of arranging said pin in position to release the knuckle or permit the knuckle to open.

Another object is to provide a car coupler in which the knuckle is equipped with a device that limits the movement of the looking pin and prevents it from becoming accidentally displaced when said pin is. being shifted 111130311 inoperative position preparatory to releasing the knuckle. And still another object is to provide a car coupler which is so designed that the knuckle effectlvely holds the'locking pin in the drawhead,

and prevents accidental displacement of same when the knuckle is in 1ts closed and open positions. Other objects and desirable features of my invention will be hereinafter pointed out. V

Figure 1 of the drawings is a top plan View of a car coupler constructed in accordance with my elevational view of said coupler; Fig. '3 is a vertical-sectional view taken onthe line 3-3 of Fig. 1; Fig. 4 is a perspective view of the locking pin; and Fig. 5' 1s a perspec-' tive view of the pivotally mounted retain ing device for the locking in.

Referring to the drawn s which illustrate the preferred form of my invention, A designates theldrawhead of the coupler, B designates the pivotally mounted knuckle which is provided with a pairof wings I invention; Fig. 2 is a sideand that-embrace the drawhead, and .C

the locking pin C has been raised so as to" bring the notches or recesses 1 and 2 in Patented May 4, 1915.

same into alinement with the wings on the knuckle. v The reference character D designates the pivotally mounted retaining device on the head that moves into engagement with a shoulder on the locking pin C when said pin is raised or moved upwardly so as to retain 'said pin in its elevated position until the Wings on the knuckle enter the notches 1 and? in the locking pin. v y invention consists. inproviding the coupler with means for preventing the looking pin C from being drawn out of'the'head A accidentally when said pin is raised or moved upwardly to release or unlock the knuckle B, and in the preferred form of my invention as'herein illustrated, said means consists of a laterally projectingf'device or stop 3 on the 'top wing 1 of the, knuckle, shown in broken lines in Fig. 1, that enters an elongated vertically-disposed slot 4 in the locking pin 0 when the knuckle is locked in its closed position by the pin C. When the locking pin C is raised upwardly, pre: paratory. to opening the knuckle B, the proje-ction 3 "on the top wing of the knuckle strikes against a shoulder 5 on the-locking pin, preferably formed by'thebottom wall of the recess or notch 1 in said pin and thus limits the upward movement of the pin,

thereby preventingthe locking pin from being completely withdrawn from the head A of the coupler. r y

When the knuckle is in its closed position, as shown in Fig. 1, the locking pin C 00- operates with the wings on' the knuckle to securelylock the knuckle in its closed posi: i

tion, and the projection 3 on the top wing of the knuckle which enters the elongated slot 4 in the locking pin prevents said looking pin from being withdrawn accidentally from the head. When the knuckle Bis in its open position the wings thereon are po-,

sitioned in the notches 1 and2 of'the lock- 1ng;pin and thus prevent the locking pin from being withdrawn from the head. Consequently, the knuckle of my improved coupler effectively the head and prev drawal of same coupling or uncou words, my. improve knuckleor parts th the locki that the. operate wi the head and prev'e drawn from the hea in its closed position an tion.

My improvement to the cost of manu cause the stop on the upward move consists of a device integral with the kn locking pin which formed during the op locking pin. Furthe does not comprise an are apt to Wor the coupler is loose.

While I prefer to ar locking pin on I do not wish invention is limi construction f car coupler provi comprises m movement of I it from being withdr ng pin to r d when the d in its open poslportions arranged one above the other, a a

that is pref it to be un 'ded with a knuckle which for limiting th the locking p holds the locking pin in dentally when said locking pin is being ents accidental withmoved into position to release the knuckle.

en the coupler is in Having thus described my invention, what pling position ;or,

designed ters Patent is: e knuckle co- In a car coupler, a head, a locking pin aretain it in ranged in said headin such amanner that it. it from being withcan move in a vertical direction only, said knuckle is pin being provided; with a pair of cut-out in other I claim as new and desire to secure by Letknuckle pivotally mounted in said head and adds practically nothing provided with a pair of tails arrangedone the'coupler beabove the other that lie wholly without said 1e that limits head and which cooperate with cut-out porof the locking pin tions on said pin to hold said pin in its erably formed raised position when the knuckle is in its the slot in the open position, and a lateral projectionon receives said device is the uppermost tail that coeperates with a eration of casting the vertically-disposed slot formed in said pin my improvement above the uppermost cut-out portion thereof arts that when the knuckle is in its closed position, become lost when said projection being adapted to contact with-the lower edge of the uppermost recess Y E. DOERR.

e upward Witnesses: in and preventing M. D. Jonas,

the head acci- WM, E. Prmu'rnn.

stop for the when the locking pin is raised so as to pref the knuckle, ,vent the complete withdrawal of said pin. derstood that my In testimony whereof I hereunto aflix my ted toa coupler ofthisexact signature in the presence of two witnesses, ea consists in a this 31st day of J'anuary,-1914.

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